报错：

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'warningProducer': Invocation of init method failed; nested exception is java.lang.ExceptionInInitializerError        at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:133)        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInitialization(AbstractAutowireCapableBeanFactory.java:396)        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1505)        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:521)        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:458)        at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:296)        at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:223)        at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:293)        at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)        at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:628)        at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:932)        at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:479)        at org.springframework.context.support.ClassPathXmlApplicationContext.
     
      (ClassPathXmlApplicationContext.java:139)        at org.springframework.context.support.ClassPathXmlApplicationContext.
      
       (ClassPathXmlApplicationContext.java:93)        at com.alibaba.dubbo.container.spring.SpringContainer.start(SpringContainer.java:50)        at com.alibaba.dubbo.container.Main.main(Main.java:80)Caused by: java.lang.ExceptionInInitializerError        at com.alibaba.rocketmq.client.impl.MQClientAPIImpl.
       
        (MQClientAPIImpl.java:86)        at com.alibaba.rocketmq.client.impl.factory.MQClientInstance.
        
         (MQClientInstance.java:133)        at com.alibaba.rocketmq.client.impl.MQClientManager.getAndCreateMQClientInstance(MQClientManager.java:51)        at com.alibaba.rocketmq.client.impl.producer.DefaultMQProducerImpl.start(DefaultMQProducerImpl.java:175)        at com.alibaba.rocketmq.client.impl.producer.DefaultMQProducerImpl.start(DefaultMQProducerImpl.java:160)        at com.alibaba.rocketmq.client.producer.DefaultMQProducer.start(DefaultMQProducer.java:76)        at cn.ximi.mq.producer.WarningProducer.init(WarningProducer.java:45)        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)        at java.lang.reflect.Method.invoke(Method.java:606)        at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleElement.invoke(InitDestroyAnnotationBeanPostProcessor.java:344)        at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleMetadata.invokeInitMethods(InitDestroyAnnotationBeanPostProcessor.java:295)        at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:130)        ... 15 moreCaused by: java.lang.RuntimeException: InetAddress java.net.InetAddress.getLocalHost() throws UnknownHostExceptionSee https://github.com/alibaba/RocketMQ/issues/64 for further details.        at com.alibaba.rocketmq.common.MixAll.localhost(MixAll.java:458)        at com.alibaba.rocketmq.common.MixAll.
         
          (MixAll.java:82)        ... 29 moreCaused by: java.net.UnknownHostException: server-40: server-40        at java.net.InetAddress.getLocalHost(InetAddress.java:1475)        at com.alibaba.rocketmq.common.MixAll.localhost(MixAll.java:454)        ... 30 moreCaused by: java.net.UnknownHostException: server-40        at java.net.Inet4AddressImpl.lookupAllHostAddr(Native Method)        at java.net.InetAddress$1.lookupAllHostAddr(InetAddress.java:901)        at java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1295)        at java.net.InetAddress.getLocalHost(InetAddress.java:1471)        ... 31 more
         
        
       
      
     

查看当前主机名：

hostname命令：

 

在hosts中配置mq的master和slave（如果有slave）：

这样生产者服务就可以启动了。